http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114345138-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ddc60a6ee0a7de7996b6fba29b48e3f0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0013 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-34 |
| filingDate | 2022-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b978b8bcd09db43c5e4114cc5b92f04b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23e5cf3cc37cae899625850dfa901a59 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7af783948ea3821fef9d66f03f297c6e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf0e1b372d0c521ed77285abba2fc7b5 |
| publicationDate | 2022-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114345138-A |
| titleOfInvention | Casting liquid for asymmetric flat microporous membrane and preparation method of PVDF flat microporous membrane |
| abstract | The invention discloses a casting solution for an asymmetric flat microporous film and a preparation method for a PVDF flat microporous film. For microporous membranes, a solvent with a surface tension greater than σ is used as the solvent of the casting solution; if a funnel-shaped asymmetric microporous membrane is prepared, a solvent with a surface tension less than σ is selected as the solvent for the casting solution; add to the solvent of the casting solution The polymer material, the first balance additive and the second balance additive, the beneficial effects of the present invention are: using the thermodynamic principle, by adjusting the types and addition ratios of the solvent, the first balance additive and the second balance additive in the casting liquid, changing the casting The surface tension ratio between the solvent of the film liquid and the polymer material makes the film-casting liquid exhibit positive or negative adsorption properties, so as to control the distribution state of the polymer material and the mass transfer behavior of the solvent during the phase inversion process of the film-casting liquid. Control of membrane pore morphology and structure. |
| priorityDate | 2022-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.